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Trendnet TEW-657BRM CVE-2026-5354

| EUVD-2026-18410 LOW
OS Command Injection (CWE-78)
2026-04-02 VulDB GHSA-j222-qjwr-c34g
2.1
CVSS 4.0

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

6
Severity Changed
Apr 29, 2026 - 01:11 NVD
MEDIUM LOW
CVSS changed
Apr 29, 2026 - 01:11 NVD
5.3 (MEDIUM) 2.1 (LOW)
PoC Detected
Apr 07, 2026 - 17:24 vuln.today
Public exploit code
EUVD ID Assigned
Apr 02, 2026 - 17:00 euvd
EUVD-2026-18410
Analysis Generated
Apr 02, 2026 - 17:00 vuln.today
CVE Published
Apr 02, 2026 - 16:30 nvd
MEDIUM 5.3

DescriptionNVD

A flaw has been found in Trendnet TEW-657BRM 1.00.1. Affected by this vulnerability is the function vpn_connect of the file /setup.cgi. Executing a manipulation of the argument policy_name can lead to os command injection. The attack can be executed remotely. The exploit has been published and may be used. The vendor confirms, that "[t]he product in question (...) has been discontinued and end of life since June 23, 2011, that is more than 14 years ago. We no longer provide support for this product, so we are not able to confirm the vulnerabilities. We will make an announcement on our website's product support page and notify customers who registered their products with us." This vulnerability only affects products that are no longer supported by the maintainer.

AnalysisAI

Remote authenticated command injection in TrendNet TEW-657BRM 1.00.1 allows manipulation of the policy_name parameter in /setup.cgi vpn_connect function to achieve operating system command execution with limited impact. The affected router has been end-of-life since June 2011 and is no longer supported by the vendor; however, publicly available exploit code exists and the vulnerability demonstrates real command injection capability despite the legacy product status.

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CVE-2026-5354 vulnerability details – vuln.today

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